At this time, the only available IO on Hardware are IO 0..3 (Led control) mapped to J14 connector (Access with GPIOL registers).

IO are output only because a LVC04 chip (hex inverter) is between IO_ports of the ARM and the J14 connector.

WARNING :

Followings instructions can permanently damage your spykee.

To use IO port 0 as an input, which is enough to implement a bidirectional serial link, 2 solutions :
- solder a wire directly on the pin1 of the hex-inverter, which is wired directly to IO PORT 0 of the ARM processor (easiest solution)
- remove pin 1 and 2 of the hexinverter, and strap the free pad of pin 1 and pin 2 together. With this, IO 0 is always available on J14 connector.

Serial Control Port

Device: /dev/ttyS1

The serial control port is a serial port that control the battery module, the motor controller and the IR receiver.